#pathology

• Acromelalgia — A rare clinical syndrome characterized by paroxysmal episodes of intense burning pain, pronounced redness (erythema), and increased local temperature in the extremities (hands and feet). Symptoms are typically triggered by exposure to heat or physical exertion and are caused by a vasomotor disorder of the peripheral microcirculation.
• Acromicria — A rare pathological clinical condition, considered the opposite of acromegaly, characterized by the unusually small size and insufficient development of the body's extremities (hands, feet, facial bones). This structural syndrome is most often caused by congenital pituitary dysfunctions, diencephalic lesions, or severe secretory disorders of trophic hormones during growth.
• Acromioclavicular — Pertaining to or relating simultaneously to the acromion and the clavicle; describing the articular, ligamentous, or capsular elements uniting the bony process of the scapula with the external extremity of the clavicle at the superolateral aspect of the shoulder.
• Acromionitis — An acute or chronic inflammatory pathological process localized at the level of the acromion or its immediately adjacent periarticular structures (such as the subacromial bursa and rotator cuff tendons). This structural condition is most frequently triggered by repeated microtraumas, occupational or athletic mechanical overuse, or localized degenerative phenomena, clinically manifesting through intense pain during arm elevation, partial functional impairment of the shoulder, localized edema, and acute tenderness upon palpation.
• Acronecrosis — An irreversible destructive pathological process characterized by cell death and necrosis of tissues located within the distal extremities of the body (fingers and toes). This severe ischemic phenomenon is caused by the prolonged interruption of arterial blood flow, and is encountered in advanced stages of diabetic gangrene, severe frostbite, occlusive arterial thrombosis, or acute systemic vasculitis.
• Acropathy — A general medical term or broad clinical category designating any organic, trophic, destructive, or deforming condition localized exclusively in the distal extremities of the body (hands, feet, digits). This structural manifestation can have vascular, neurological, or endocrine causes, including within its scope diverse pathologies from acropachy and neuropathic trophic ulcerations to severe secondary osteoarticular deformities.
• Acropathology — A specialized branch of medical pathology or a niche clinical discipline dealing with the systematic study, diagnosis, anatomical description, and treatment of all diseases, structural anomalies, injuries, and functional disorders localized within the extremities of the body (hands, feet, and digits).
• Acro-osteolysis — A destructive pathological process characterized by the progressive bone resorption, decalcification, or dissolution of the terminal (distal) phalanges of the fingers and toes. This severe skeletal structural phenomenon can be congenital or acquired, observed on X-rays as a shortening or disappearance of the phalangeal tufts, and is encountered as a major symptom in systemic sclerosis, secondary hyperparathyroidism, occupational chronic exposure to vinyl chloride, or rare genetic syndromes (such as Hajdu-Cheney syndrome).
• Acrotrophodynia — A rare pathological clinical syndrome characterized by the association of intense pain crises (odynia) with severe trophic disorders and functional vasomotor changes localized strictly within the distal extremities of the body (hands, feet, and digits). This complex neuromuscular phenomenon is caused by structural alterations of the peripheral sympathetic vegetative innervation, leading in advanced stages to painful trophic ulcers, skin thinning, and destructive nail changes.
• Actinobacillosis — A chronic, structural infectious disease primarily affecting animals (especially cattle and swine) and extremely rarely humans, caused by bacteria of the genus Actinobacillus (such as Actinobacillus lignieresii). The disease is clinically characterized by the development of abscesses and hard granulomatous nodules in soft tissues, frequently localized in the tongue (commonly known as 'wooden tongue'), lymph nodes, or respiratory tract, causing major difficulties in mastication and deglutition.
• Actinomycosis — A chronic, non-contagious structural bacterial infectious disease caused by anaerobic or microaerophilic bacteria of the genus Actinomyces (most commonly Actinomyces israelii), which normally colonize human mucous membranes. The condition manifests through the development of hard inflammatory granulomas and pseudotumoral suppurative abscesses that drain via fistulous tracts a characteristic pus containing yellow granules ('sulfur granules'), most frequently localizing cervicofacially (mouth and neck), thoracically, or abdominally following local trauma.
• Actinopathy — A structural medical term used to define any pathological state, skin lesion, or systemic condition directly caused by prolonged, accidental, or therapeutic exposure to light radiation, ultraviolet rays, or ionizing radiation (X-rays and gamma rays). Actinopathy encompasses conditions ranging from acute radiodermatitis and severe sunburns to deep cellular degenerative changes or actinic cataracts induced by aggressive radiant fluxes.
• Adamantinoma — A rare, slow-growing primary malignant bone tumor predominantly located in the tibial shaft or mandible, histologically characterized by islands of epithelial cells surrounded by a fibrous stroma; a pathological variant structurally related to ameloblastoma. This bone lesion gradually destroys the bone cortex, presenting a characteristic soap-bubble appearance on X-rays and requiring radical surgical excision to prevent metastasis.
• Adamantolysis — A pathological or experimental process of destruction, dissolution, or structural disintegration of dental enamel, caused by the action of acids, bacterial enzymes, or severe metabolic disorders. This phenomenon leads to the demineralization of the enamel prism and the loss of tooth surface integrity, being the first stage in the development of deep carious lesions.
• Adephagia — A pathological symptom characterized by an imperious, continuous, and insatiable organic need to eat, without the occurrence of a feeling of satiety; exaggerated hunger or morbid voracity. In clinical terms, this metabolic or neuro-psychic disorder is frequently associated with hypothalamic dysfunctions, diabetes mellitus, or certain severe endocrine conditions.
• Adenalgic — Relating to adenalgia; characterized by pain localized within a gland or a lymph node. This structural term describes the painful clinical manifestation that usually accompanies inflammatory, infectious, or tumor processes of the glandular or lymphatic system.
• Adenalgia — Pain localized within a gland or a lymph node, occurring independently or as a secondary symptom within inflammatory, infectious, or tumor processes. This clinical phenomenon manifests through heightened sensitivity to palpation and persistent structural discomfort, requiring clinical investigations to determine the exact etiology of the nodal involvement.
• Adenectomy — A surgical intervention consisting of the complete or partial extirpation or resection of a gland or a lymph node affected by a pathological process. This structural surgical procedure is frequently used to remove glandular tumors, relieve obstructive complications, or eliminate severe infectious foci from the lymphatic system.
• Adenia — A rare pathological condition or old clinical concept characterized by the congenital absence, severe atrophy, or insufficient development of glands or lymph nodes in a specific region of the body. This structural phenomenon disrupts the normal functioning of the endocrine or immune system, affecting glandular secretion or the body's lymphatic filtration capacity.
• Adenitis — An acute or chronic inflammation of a lymph node or a gland, usually caused by a localized bacterial, viral, or fungal infection in the vicinity. This structural condition manifests clinically through swelling, increased local sensitivity, spontaneous pain upon palpation, and sometimes redness of the overlying skin, requiring clinical investigations to differentiate it from other lymphadenopathies.